Y = 3x - 7...slope here is 3 and y int is -7
3x + 9y = 9
9y = -3x + 9
y = -1/3x + 1....slope here is -1/3 and y int is 1
the slopes 3 and -1/3 are negative reciprocals of each other...therefore, ur lines are perpendicular
J(jeans) = 2s + 4
d(dress pants) = 2.5s - 2
s = shirt
he spent : 2s + 4 + 2.5s - 2 = 4.5s + 2
Answer:
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Explanation:
<u>1. Ratio of campers to counselors in june:</u>
- Ratio = number of campers / number of counselors
- Ratio = 325 campers / 26 counselors
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<u>2. Ratio of campers to counselors in july:</u>
- number of campers = 325 - 265 + 215 = 275
- number of counselors = x (unknown)
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<u>3. Equivalent ratios:</u>
- 325 campers / 26 counselors = 275 campers / x
Solve for x:
- x = (26counselors/325campers) × 275campers = 22 counselors ← answer